oj.uz

Submission #696761

# Submission time Handle Problem Language Result Execution time Memory
696761 2023-02-07T08:00:12 Z vjudge1 Amusement Park (CEOI19_amusementpark) C++17
63 / 100
 3000 ms 3412 KB 
#pragma GCC optimize(2)
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef double db;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
#define fir first
#define sec second
typedef vector <int> vi;
typedef vector <ll> vl;
template <typename __Tp> void read(__Tp &x) {
    int f = 0; x = 0; char ch = getchar();
    for (; !isdigit(ch); ch = getchar()) if (ch == '-') f = 1;
    for (; isdigit(ch); ch = getchar()) x = (x << 1) + (x << 3) + (ch ^ 48);
    if (f) x = -x;
}
template <typename __Tp1, typename ...__Tp2> void read(__Tp1 &x, __Tp2 &...y) { read(x), read(y...); }
template <typename __Tp> void write(__Tp x) {
    if (x < 0) putchar('-'), x = -x;
    if (x > 9) write(x / 10);
    putchar(x % 10 + 48);
}
void write(char ch) { putchar(ch); }
template <typename __Tp1, typename ...__Tp2> void write(__Tp1 x, __Tp2 ...y) { write(x), write(y...); }

const int mod = 998244353;
template <int mod>
struct mint {
    #define fix(x) (((x) % mod + mod) % mod)
    int x;
    mint() { x = 0; }
    template <typename __Tp> mint(__Tp _x) { x = fix(_x); }
    friend mint operator + (mint a, mint b) { return a.x + b.x; }
    friend mint operator - (mint a, mint b) { return a.x - b.x; }
    friend mint operator * (mint a, mint b) { return (ll) a.x * b.x; }
    template <typename __Tp>
    friend mint operator ^ (mint a, __Tp b) {
        mint ans = 1;
        while (b) {
            if (b & 1) ans *= a;
            a *= a, b >>= 1;
        }
        return ans;
    }
    friend mint operator / (mint a, mint b) { return a * (b ^ (mod - 2)); }
    friend mint & operator += (mint & a, mint b) { return a = a + b; }
    friend mint & operator -= (mint & a, mint b) { return a = a - b; }
    friend mint & operator *= (mint & a, mint b) { return a = a * b; }
    template <typename __Tp>
    friend mint & operator ^= (mint & a, __Tp b) { return a = a ^ b; }
    friend mint & operator /= (mint & a, mint b) { return a = a / b; }
    #undef fix
};
typedef mint <mod> mi;
int n, m, e[20], vld[1 << 18], popcnt[1 << 18], lg[1 << 18];
mi f[1 << 18];

int main() {
    read(n, m);
    for (int i = 1; i <= m; ++i) {
        int u, v; read(u, v), --u, --v;
        e[u] |= (1 << v), e[v] |= (1 << u);
    }
    int S = (1 << n) - 1;
    for (int i = 0; i < n; ++i) lg[1 << i] = i;
    vld[0] = 1;
    for (int s = 1; s <= S; ++s) {
        int i = lg[s & -s];
        popcnt[s] = popcnt[s & (s - 1)] + 1;
        vld[s] = vld[s & (s - 1)] & !(e[i] & s);
    }
    f[0] = 1;
    for (int s = 1; s <= S; ++s)
        for (int t = s; t; t = (t - 1) & s)
            if (vld[t]) f[s] += f[s ^ t] * (popcnt[t] & 1 ? 1 : -1);
    mi ans = f[S] * m / 2;
    write(ans.x, '\n');
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1236 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1236 KB Output is correct
14 Correct 1 ms 1236 KB Output is correct
15 Correct 1 ms 1236 KB Output is correct
16 Correct 1 ms 1236 KB Output is correct
17 Correct 1 ms 1236 KB Output is correct
18 Correct 1 ms 1236 KB Output is correct
19 Correct 1 ms 1236 KB Output is correct
20 Correct 1 ms 1236 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1236 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1236 KB Output is correct
14 Correct 1 ms 1236 KB Output is correct
15 Correct 1 ms 1236 KB Output is correct
16 Correct 1 ms 1236 KB Output is correct
17 Correct 1 ms 1236 KB Output is correct
18 Correct 1 ms 1236 KB Output is correct
19 Correct 1 ms 1236 KB Output is correct
20 Correct 1 ms 1236 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1236 KB Output is correct
28 Correct 1 ms 1236 KB Output is correct
29 Correct 1 ms 1236 KB Output is correct
30 Correct 1 ms 1236 KB Output is correct
31 Correct 1 ms 1236 KB Output is correct
32 Correct 1 ms 1236 KB Output is correct
33 Correct 1 ms 1236 KB Output is correct
34 Correct 1 ms 1236 KB Output is correct
35 Correct 1 ms 1236 KB Output is correct
36 Correct 1 ms 1236 KB Output is correct
37 Correct 1 ms 1236 KB Output is correct
38 Correct 1 ms 1236 KB Output is correct
39 Correct 1 ms 1236 KB Output is correct
40 Correct 1 ms 1236 KB Output is correct
41 Correct 2 ms 1236 KB Output is correct
42 Correct 1 ms 1236 KB Output is correct
43 Correct 1 ms 1236 KB Output is correct
44 Correct 1 ms 1236 KB Output is correct
45 Correct 1 ms 1236 KB Output is correct
46 Correct 1 ms 1236 KB Output is correct
47 Correct 1 ms 1236 KB Output is correct
48 Correct 1 ms 1236 KB Output is correct
49 Correct 1 ms 1236 KB Output is correct
50 Correct 1 ms 1236 KB Output is correct
51 Correct 1 ms 1236 KB Output is correct
52 Correct 1 ms 1236 KB Output is correct
53 Correct 1 ms 1236 KB Output is correct
54 Correct 1 ms 1236 KB Output is correct
55 Correct 1 ms 1236 KB Output is correct
56 Correct 1 ms 1236 KB Output is correct
57 Correct 1 ms 1236 KB Output is correct
58 Correct 1 ms 1236 KB Output is correct
59 Correct 1 ms 1236 KB Output is correct
60 Correct 1 ms 1236 KB Output is correct
61 Correct 1 ms 1236 KB Output is correct
62 Correct 1 ms 1236 KB Output is correct
63 Correct 1 ms 1236 KB Output is correct
64 Correct 1 ms 1236 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1236 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1236 KB Output is correct
14 Correct 1 ms 1236 KB Output is correct
15 Correct 1 ms 1236 KB Output is correct
16 Correct 1 ms 1236 KB Output is correct
17 Correct 1 ms 1236 KB Output is correct
18 Correct 1 ms 1236 KB Output is correct
19 Correct 1 ms 1236 KB Output is correct
20 Correct 1 ms 1236 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1236 KB Output is correct
28 Correct 1 ms 1236 KB Output is correct
29 Correct 1 ms 1236 KB Output is correct
30 Correct 1 ms 1236 KB Output is correct
31 Correct 1 ms 1236 KB Output is correct
32 Correct 1 ms 1236 KB Output is correct
33 Correct 1 ms 1236 KB Output is correct
34 Correct 1 ms 1236 KB Output is correct
35 Correct 1 ms 1236 KB Output is correct
36 Correct 1 ms 1236 KB Output is correct
37 Correct 1 ms 1236 KB Output is correct
38 Correct 1 ms 1236 KB Output is correct
39 Correct 1 ms 1236 KB Output is correct
40 Correct 1 ms 1236 KB Output is correct
41 Correct 2 ms 1236 KB Output is correct
42 Correct 1 ms 1236 KB Output is correct
43 Correct 1 ms 1236 KB Output is correct
44 Correct 1 ms 1236 KB Output is correct
45 Correct 1 ms 1236 KB Output is correct
46 Correct 1 ms 1236 KB Output is correct
47 Correct 1 ms 1236 KB Output is correct
48 Correct 1 ms 1236 KB Output is correct
49 Correct 1 ms 1236 KB Output is correct
50 Correct 1 ms 1236 KB Output is correct
51 Correct 1 ms 1236 KB Output is correct
52 Correct 1 ms 1236 KB Output is correct
53 Correct 1 ms 1236 KB Output is correct
54 Correct 1 ms 1236 KB Output is correct
55 Correct 1 ms 1236 KB Output is correct
56 Correct 1 ms 1236 KB Output is correct
57 Correct 1 ms 1236 KB Output is correct
58 Correct 1 ms 1236 KB Output is correct
59 Correct 1 ms 1236 KB Output is correct
60 Correct 1 ms 1236 KB Output is correct
61 Correct 1 ms 1236 KB Output is correct
62 Correct 1 ms 1236 KB Output is correct
63 Correct 1 ms 1236 KB Output is correct
64 Correct 1 ms 1236 KB Output is correct
65 Correct 14 ms 1364 KB Output is correct
66 Correct 15 ms 1480 KB Output is correct
67 Correct 10 ms 1484 KB Output is correct
68 Correct 13 ms 1364 KB Output is correct
69 Correct 34 ms 1480 KB Output is correct
70 Correct 22 ms 1484 KB Output is correct
71 Correct 23 ms 1484 KB Output is correct
72 Correct 25 ms 1364 KB Output is correct
73 Correct 16 ms 1480 KB Output is correct
74 Correct 17 ms 1480 KB Output is correct
75 Correct 18 ms 1480 KB Output is correct
76 Correct 18 ms 1492 KB Output is correct
77 Correct 38 ms 1492 KB Output is correct
78 Correct 33 ms 1496 KB Output is correct
79 Correct 30 ms 1496 KB Output is correct
80 Correct 28 ms 1616 KB Output is correct
81 Correct 28 ms 1492 KB Output is correct
82 Correct 32 ms 1492 KB Output is correct
83 Correct 25 ms 1620 KB Output is correct
84 Correct 31 ms 1492 KB Output is correct
85 Correct 96 ms 1604 KB Output is correct
86 Correct 63 ms 1496 KB Output is correct
87 Correct 67 ms 1596 KB Output is correct
88 Correct 74 ms 1600 KB Output is correct
89 Correct 46 ms 1492 KB Output is correct
90 Correct 48 ms 1612 KB Output is correct
91 Correct 51 ms 1596 KB Output is correct
92 Correct 53 ms 1500 KB Output is correct

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1236 KB Output is correct
2 Correct 1 ms 1236 KB Output is correct
3 Correct 1 ms 1236 KB Output is correct
4 Correct 1 ms 1236 KB Output is correct
5 Correct 1 ms 1236 KB Output is correct
6 Correct 1 ms 1236 KB Output is correct
7 Correct 1 ms 1236 KB Output is correct
8 Correct 1 ms 1236 KB Output is correct
9 Correct 1 ms 1236 KB Output is correct
10 Correct 1 ms 1236 KB Output is correct
11 Correct 1 ms 1236 KB Output is correct
12 Correct 1 ms 1236 KB Output is correct
13 Correct 1 ms 1236 KB Output is correct
14 Correct 1 ms 1236 KB Output is correct
15 Correct 1 ms 1236 KB Output is correct
16 Correct 1 ms 1236 KB Output is correct
17 Correct 1 ms 1236 KB Output is correct
18 Correct 1 ms 1236 KB Output is correct
19 Correct 1 ms 1236 KB Output is correct
20 Correct 1 ms 1236 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1236 KB Output is correct
23 Correct 1 ms 1236 KB Output is correct
24 Correct 1 ms 1236 KB Output is correct
25 Correct 1 ms 1236 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1236 KB Output is correct
28 Correct 1 ms 1236 KB Output is correct
29 Correct 1 ms 1236 KB Output is correct
30 Correct 1 ms 1236 KB Output is correct
31 Correct 1 ms 1236 KB Output is correct
32 Correct 1 ms 1236 KB Output is correct
33 Correct 1 ms 1236 KB Output is correct
34 Correct 1 ms 1236 KB Output is correct
35 Correct 1 ms 1236 KB Output is correct
36 Correct 1 ms 1236 KB Output is correct
37 Correct 1 ms 1236 KB Output is correct
38 Correct 1 ms 1236 KB Output is correct
39 Correct 1 ms 1236 KB Output is correct
40 Correct 1 ms 1236 KB Output is correct
41 Correct 2 ms 1236 KB Output is correct
42 Correct 1 ms 1236 KB Output is correct
43 Correct 1 ms 1236 KB Output is correct
44 Correct 1 ms 1236 KB Output is correct
45 Correct 1 ms 1236 KB Output is correct
46 Correct 1 ms 1236 KB Output is correct
47 Correct 1 ms 1236 KB Output is correct
48 Correct 1 ms 1236 KB Output is correct
49 Correct 1 ms 1236 KB Output is correct
50 Correct 1 ms 1236 KB Output is correct
51 Correct 1 ms 1236 KB Output is correct
52 Correct 1 ms 1236 KB Output is correct
53 Correct 1 ms 1236 KB Output is correct
54 Correct 1 ms 1236 KB Output is correct
55 Correct 1 ms 1236 KB Output is correct
56 Correct 1 ms 1236 KB Output is correct
57 Correct 1 ms 1236 KB Output is correct
58 Correct 1 ms 1236 KB Output is correct
59 Correct 1 ms 1236 KB Output is correct
60 Correct 1 ms 1236 KB Output is correct
61 Correct 1 ms 1236 KB Output is correct
62 Correct 1 ms 1236 KB Output is correct
63 Correct 1 ms 1236 KB Output is correct
64 Correct 1 ms 1236 KB Output is correct
65 Correct 14 ms 1364 KB Output is correct
66 Correct 15 ms 1480 KB Output is correct
67 Correct 10 ms 1484 KB Output is correct
68 Correct 13 ms 1364 KB Output is correct
69 Correct 34 ms 1480 KB Output is correct
70 Correct 22 ms 1484 KB Output is correct
71 Correct 23 ms 1484 KB Output is correct
72 Correct 25 ms 1364 KB Output is correct
73 Correct 16 ms 1480 KB Output is correct
74 Correct 17 ms 1480 KB Output is correct
75 Correct 18 ms 1480 KB Output is correct
76 Correct 18 ms 1492 KB Output is correct
77 Correct 38 ms 1492 KB Output is correct
78 Correct 33 ms 1496 KB Output is correct
79 Correct 30 ms 1496 KB Output is correct
80 Correct 28 ms 1616 KB Output is correct
81 Correct 28 ms 1492 KB Output is correct
82 Correct 32 ms 1492 KB Output is correct
83 Correct 25 ms 1620 KB Output is correct
84 Correct 31 ms 1492 KB Output is correct
85 Correct 96 ms 1604 KB Output is correct
86 Correct 63 ms 1496 KB Output is correct
87 Correct 67 ms 1596 KB Output is correct
88 Correct 74 ms 1600 KB Output is correct
89 Correct 46 ms 1492 KB Output is correct
90 Correct 48 ms 1612 KB Output is correct
91 Correct 51 ms 1596 KB Output is correct
92 Correct 53 ms 1500 KB Output is correct
93 Correct 1789 ms 3392 KB Output is correct
94 Correct 1901 ms 3392 KB Output is correct
95 Correct 1925 ms 3392 KB Output is correct
96 Correct 1394 ms 3388 KB Output is correct
97 Correct 1167 ms 3392 KB Output is correct
98 Correct 1388 ms 3412 KB Output is correct
99 Correct 119 ms 1876 KB Output is correct
100 Correct 100 ms 1852 KB Output is correct
101 Correct 101 ms 1856 KB Output is correct
102 Correct 87 ms 1852 KB Output is correct
103 Correct 1259 ms 2388 KB Output is correct
104 Correct 640 ms 2388 KB Output is correct
105 Correct 467 ms 2388 KB Output is correct
106 Correct 309 ms 2368 KB Output is correct
107 Execution timed out 3090 ms 3284 KB Time limit exceeded
108 Halted 0 ms 0 KB -